varpic.m

matlab平台上的图像处理源代码

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% calculate a virance picture for centralizing
% written by zhang_rui at Chinese Academy of Science
% E-mail:[e-mail]
% 2006/6/3
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function varp=varpic(g)
[M,N]=size(g);
varp=g;
for i=8:15:M-7;
    for j=8:15:N-7;
        temp=g((i-7:i+7),(j-7:j+7));
        temp=temp(:);
        varp((i-7:i+7),(j-7:j+7))=std(temp);
    end
end